Improvement in music-leaf turners



T. DONNE LLAN.

MUSIC LEAF-TURNER. 110.171,731. Patented www@ NFSTES.PHOTO-LITHOGRAFHER. WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

THOMAS DONNELLAN,OF SYRAOUSE, NEW YORK.`

IMPRovEMEN'r 1N MUSIC-LEAF TuRNERs.

Specification forming part of Letters Patent No. 171,781, dated January4, 1876; application filed lNovember 23, 1875.

To all whom tt may concern Be it known that I, THOMAS DONNELLAN, ofSyracuse, Onondaga county, New York, have invented an Apparatus forHolding and Turning Leaves of Music, of which the following is aspecification:

My apparatus is composed of certain frames turning on a center rod, andactuated independently ofeach other. Each ofthese frames is attached tothe leaf' to be turned, and one,

two, or more of the frames can be used as re- Y quired. The frames arerevolved by a simple apparatus conveniently affixed to the instrument onwhich it is used, so as to be put in action by the hand of the performerWithout materially interfering with the performance of the music.

The construction is as follows: The frames a b, shown at Figure l in thedrawing, are formed of wire, or other ecient light material. On thelower bar of each of the frames one or more looped springs, c, of thinmetal should be aflixed to receive and hold the lower edge of the leaf;and at the upper outer corner I hinge a spring-ngerLf, that shuts downupon the leaf and holds it at top. The leaf is shown by dotted lines inFig. 1. On the shaft I affix also a spring-finger, d, similar to f, tohold a single leaf of music to the frame while turning. The framed ispermanently affixed to the center shaft e, on which the additional frameor frames b turn loosely. At or near the upper end of this shaft or rodc a stop-piece, c, is permanently afxed, against which the loose frame bstrikes when opened out, as seen in Fig. l. The lower end of shaft c ismade square, or prismatic, in form to fit into a socket in the upper endof a short shaft, h, set in the base g in an inclined position, asclearly indicated in Fig. 3. The base is made of any plain or ornamentalform to suit the taste and purpose of the constructor. there is achamber in which the shaft h is located, With its upper end extending upthrough the cap to receive the lower end of the shaft e, as abovedescribed. On the shaft h there is a grooved pulley, t, around which acord or chain, i', passes, and is affixed to it at its center, each endpassing over a stud-roller on each side, and thence down to a key, la,below. These keys k are held up by a coiled spring when not in action,as clearly seen in the In it drawing, Figs. 2 and 3, which represent theinterior of the chamber in the base g. By alternately depressing thekeys k the shaft h is made to turn, carrying with` it the frame a, whichis thus made to turn a semi-revolution to the right or left. Above thepulley t' there is a hanged collar, l, surrounding the shaft h, andaffixed permanently to the case in front. (See Fig. 3.) On this collarVas a center a pulley, m, turns, actuated by a cord, m', one end ofwhich is attached to the spring n, the other to the key la. From aprojection on the periphery ofthe pulley m a stud or wrist-pin, o,projects, extending up through a slot in the cap that forms asemicircular track for it to turn in, as clearly seen in'Fi gs. 2 and 4.lThis wrist-pin o strikes against the lower bar of the frame b, and bydepressing the key k the frame b is made to revolve. One or moreadditional frames may be added like-the frame b, which overlie it Whenturned to the right. These are caused to turn in like manner byadditional keys and xtures.

As a modification to cheapen the construction, (but less convenient,)handles or arms can lbe made to project directly from the frames throughthe base to turn them by 5 but I deem the key movement the better form.

For music not exceeding four pages, two on the music-rack and two on theframe, the frame a is sufcient. For a greater nulnber of pagesadditional frames are required, one for each additional leaf. Theseadditional frames cau be readily removed, if desired, and the centershaft c With all the frames can quickly be removed, so that the base gcan be permanently afixed ,to the instrument, and the cover shut down,without interfering with it. For the lpurpose of attachment, permanentor otherwise, the curved arms g are addedto the base, and set-'screwsmay be employed to affix it Where they can be used'.

What I claim in the above-described inven- I tion is- The combination ofthe frames a b, yshaft h, pulleys t' m, cords i m', and keys la la',substantially in the manner and for the purpose

